Forced Photometry Response

Forced Photometry Response Model

Name	Type	Description
pid	integer	Processing ID for image
mjd	number	Modified julian Date
fid	integer	Filter ID (1=g; 2=r; 3=i)
ra	number	Right Ascension of epoch (same as of candidate) [deg]
dec	number	Declination of epoch (same as of candidate) [deg]
e_ra	number	Right Ascension uncertainty
e_dec	number	Declination uncertainty
mag	number	Magnitude from PSF-fit photometry [mag], obtained from magzpsci and forcediffimflux avro fields
e_mag	number	1-sigma uncertainty in mag [mag], obtained from forcediffimflux and forcediffimfluxunc avro fields
mag_corr	number	Corrected PSF magnitude
e_mag_corr	number	Error of the corrected PSF magnitude assuming no contribution from an extended component
e_mag_corr_ext	number	Error of the corrected PSF magnitude assuming a contribution from an extended component
isdiffpos	integer	1: candidate is from positive (sci minus ref) subtraction; -1: didate is from negative (ref minus sci) subtraction
corrected	boolean	Whether the corrected photometry was applied
dubious	boolean	Whether the corrected photometry should be flagged
parent_candid	number	candid of the alert for which forced photometry was triggered
has_stamp	boolean	Whether the epoch has an associated image stamp triplet (always False for forced photometry)
field	integer	ZTF field ID
rcid	integer	Readout channel ID [00 .. 63]
rfid	integer	Processing ID for reference image to facilitate archive retrieval
sciinpseeing	number	Effective FWHM of sci image [pixels]
scibckgnd	number	Background level in sci image [DN]
scisigpix	number	Robust sigma per pixel in sci image [DN]
magzpsci	number	Magnitude zero point for photometry estimates [mag]
magzpsciunc	number	Magnitude zero point uncertainty (in magzpsci) [mag]
magzpscirms	number	RMS (deviation from average) in all differences between instrumental photometry and matched photometric calibrators from science image processing [mag]
clrcoeff	number	Color coefficient from linear fit from photometric calibration of science image
clrcounc	number	Color coefficient uncertainty from linear fit (corresponding to clrcoeff)
exptime	number	Integration time of camera exposure [sec]
adpctdif1	number	Full sci image astrometric RMS along R.A. with respect to Gaia1 [arcsec]
adpctdif2	number	Full sci image astrometric RMS along Dec. with respect to Gaia1 [arcsec]
diffmaglim	number	Expected 5-sigma mag limit in difference image based on global noise estimate [mag]
programid	integer	Program ID: encodes either public, collab, or caltech mode
procstatus	string	Forced photometry processing status codes (0 => no warnings); see documentation
distnr	number	distance to nearest source in reference image PSF-catalog [arcsec]
ranr	number	Right Ascension of nearest source in reference image PSF-catalog; J2000 [deg]
decnr	number	Declination of nearest source in reference image PSF-catalog; J2000 [deg]
magnr	number	magnitude of nearest source in reference image PSF-catalog [mag]
sigmagnr	number	1-sigma uncertainty in magnr [mag]
chinr	number	DAOPhot chi parameter of nearest source in reference image PSF-catalog
sharpnr	number	DAOPhot sharp parameter of nearest source in reference image PSF-catalog